In modern automation and industry, the precise measurement, transmission, and control of analog signals are critical to efficiency, process safety, and energy optimization. The Web-IO 4.0 Analog 0-10V from Wiesemann & Theis enables the reliable integration of analog voltage signals into networked systems. With two freely configurable 0–10V channels, modern networking capability, and support for OPC UA, MQTT, and REST, the device meets all the requirements of Industry 4.0 and the Internet of Things (IoT).

As a powerful yet compact solution, the Web-IO 4.0 Analog 0-10V is ideal for applications in process monitoring, building automation, and machine data acquisition (MDA). It measures and controls analog signals with exceptional precision and transmits them securely over IP-based networks. The clear web interface allows direct access, live monitoring, and configuration via browser – with no need for additional software installation.

Thanks to its open protocol architecture, the device can be seamlessly integrated into existing network systems, control layers, or cloud environments, enabling flexible, future-proof signal processing in industrial and commercial applications.

Flexible measurement and precise control of 0–10V signals

The Web-IO 4.0 Analog 0-10V features two analog channels that can each be configured either as inputs or outputs. As an input, the device offers a 1 MΩ input impedance, making it suitable for sensors such as light, position, temperature, and pressure sensors. As an output, it provides precise 0–10V signals up to 20 mA, ideal for controlling regulators, dimming devices, frequency converters, or valves.

High signal resolution and scalable representation allow precise adaptation of measurement to specific process conditions. Users can linearize measurement values according to custom needs and visualize them clearly on the web interface – perfect for monitoring and control processes with high accuracy requirements.

User-friendly web interface for configuration and monitoring

The intuitive web interface has been specifically designed for ease of use. It can be switched between German and English and is optimized for mobile devices, enabling mobile access to analysis data. In addition to numerical displays, the interface offers graphical trend charts to depict changes over extended periods.

Outputs can be set directly via the web interface or controlled via network commands (HTTP/HTTPS, AJAX, JavaScript). The REST API enables developers to access measurement values and integrate them into custom applications. The Box2Box function is particularly efficient, transmitting analog signals over IP networks 1:1 – an ideal solution for sending measurement values across long distances without extending physical wiring.

Connected communication for Industry 4.0 and IoT

The Web-IO 4.0 Analog 0-10V supports modern communication protocols that greatly simplify integration into automation systems and IoT platforms. With MQTT, data is exchanged via publish/subscribe mechanisms, while OPC UA offers a standardized interface for industrial control systems. The REST API allows flexible integration of measurement values into web applications.

Additional protocols such as SNMP, Modbus TCP, Syslog, OPC DA, and Sensobase (database integration via ODBC) enable integration into virtually any monitoring or automation system. FTP support allows measurement log exports, while the W&T Cloud enables worldwide data collection and documentation. This allows real-time operational data analysis and centralized management across all locations.

Powerful data logger for long-term analysis

The integrated data logger stores measurement values for up to 99 years – depending on the logging frequency (15 seconds to 60 minutes). Recording histories can be exported via FTP, email, or as Excel files. Precise time synchronization via a network time server (NTP) ensures all data is recorded with exact timestamps. This facilitates long-term analysis and supports audits and quality management systems.

Particularly in production environments, laboratory applications, or energy monitoring systems, the data logger provides the foundation for evaluations and efficiency improvements – a significant advantage for precise process management.

Alarm and reporting functions for process safety

Up to 12 alarms can be configured to monitor defined thresholds. Automatic actions in the event of threshold breaches include:

• Sending email warnings and status reports
• SNMP traps for integration with network monitoring systems
• Signal transmission to other Web-IO devices via Box2Box
• HTTP triggers for cloud or remote maintenance services

These functions make the 0–10V analog converter a central tool in safety-critical or continuous monitoring processes. All events can be automatically documented in logs to meet analysis and reporting requirements within quality management.

Typical applications

• Building automation: control of dimming devices, fans, or lighting systems with 0–10V input control
• Process industry: integration of measurement transmitters for temperature, pressure, flow, or fill level
• Machine data acquisition (MDA): capturing continuous analog signals for process optimization
• Remote monitoring: network-integrated measurement and control via IP-based connection
• Environmental engineering: recording sensor values for temperature, brightness, or energy demand

Flexible power supply and industrial applicability

The device is powered primarily via Power-over-Ethernet (PoE) or alternatively by an external 12–24V DC supply. This allows straightforward integration into existing infrastructures. It complies with standards such as EN 61000-6-2 and EN 55032:2015 + A1 for electromagnetic compatibility and emissions.

Reliability and continuous operation

The Web-IO 4.0 Analog 0-10V is designed for continuous use. Its robust electronics and DIN rail mounting allow safe operation in industrial environments. An internal battery-backed clock ensures accurate timekeeping and data logging even during power outages. As a mark of quality assurance, Wiesemann & Theis provides a five-year manufacturer’s warranty.

Intelligent 0–10V signal control for modern networks

The Wiesemann & Theis Web-IO 4.0 Analog 0-10V is an advanced tool for precise measurement, transmission, and control of analog voltage signals. With its flexible channel configuration, diverse communication protocols, and cloud integration capabilities, it is an indispensable device for technicians, engineers, and operators of modern automation systems.

Whether for building automation, process monitoring, or IoT-based energy management – this device offers a reliable, precise, and scalable solution to meet the demands of digitally networked environments.